From d2968a30783740b56de6b2e9c70e1b2c650cbd31 Mon Sep 17 00:00:00 2001
From: ryoichi1988 <ryoichi1988@gmail.com>
Date: Thu, 13 Jul 2017 12:51:23 +0900
Subject: [PATCH] For improvement of docking performance, UpdateChildren is not
 done except DirectChildrenChanged

---
 .../Src/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs      | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs b/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
index c4fc3bfa..4e5303ca 100644
--- a/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
+++ b/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
@@ -72,6 +72,8 @@ namespace Xceed.Wpf.AvalonDock.Controls
 
             _model.ChildrenTreeChanged += (s, args) =>
                 {
+                    if (args.Change != ChildrenTreeChange.DirectChildrenChanged)
+                        return;
                     if (_asyncRefreshCalled.HasValue &&
                         _asyncRefreshCalled.Value == args.Change)
                         return;